feat: add advance criterion type to evaluation form builder

Adds a new 'advance' criterion type representing "should this project advance to the next round?". Only one advance criterion is allowed per form (button disabled once added). No weight, no condition fields, always required. Also updates the upsertForm Zod schema to accept the new type.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/server/routers/evaluation.ts

@@ -1227,7 +1227,7 @@ export const evaluationRouter = router({
             id: z.string(),
             label: z.string().min(1).max(255),
             description: z.string().max(2000).optional(),
-            type: z.enum(['numeric', 'text', 'boolean', 'section_header']).optional(),
+            type: z.enum(['numeric', 'text', 'boolean', 'advance', 'section_header']).optional(),
             // Numeric fields
             weight: z.number().min(0).max(100).optional(),
             minScore: z.number().int().min(0).optional(),